./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Copenhagen.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_928fa009-a571-4c43-b190-e8e01f326df5/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_928fa009-a571-4c43-b190-e8e01f326df5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_928fa009-a571-4c43-b190-e8e01f326df5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_928fa009-a571-4c43-b190-e8e01f326df5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Copenhagen.c -s /tmp/vcloud-vcloud-master/worker/run_dir_928fa009-a571-4c43-b190-e8e01f326df5/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_928fa009-a571-4c43-b190-e8e01f326df5/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9bcaeaea390de0d2b32b8c11c56b4b66e7b2005e ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 07:56:32,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 07:56:32,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 07:56:32,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 07:56:32,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 07:56:33,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 07:56:33,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 07:56:33,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 07:56:33,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 07:56:33,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 07:56:33,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 07:56:33,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 07:56:33,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 07:56:33,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 07:56:33,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 07:56:33,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 07:56:33,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 07:56:33,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 07:56:33,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 07:56:33,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 07:56:33,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 07:56:33,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 07:56:33,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 07:56:33,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 07:56:33,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 07:56:33,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 07:56:33,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 07:56:33,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 07:56:33,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 07:56:33,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 07:56:33,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 07:56:33,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 07:56:33,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 07:56:33,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 07:56:33,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 07:56:33,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 07:56:33,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 07:56:33,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 07:56:33,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 07:56:33,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 07:56:33,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 07:56:33,061 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_928fa009-a571-4c43-b190-e8e01f326df5/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-20 07:56:33,096 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 07:56:33,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 07:56:33,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 07:56:33,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 07:56:33,098 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 07:56:33,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 07:56:33,099 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 07:56:33,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 07:56:33,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 07:56:33,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 07:56:33,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 07:56:33,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 07:56:33,100 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-20 07:56:33,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 07:56:33,101 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 07:56:33,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 07:56:33,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 07:56:33,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 07:56:33,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 07:56:33,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 07:56:33,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 07:56:33,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 07:56:33,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 07:56:33,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 07:56:33,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 07:56:33,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 07:56:33,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 07:56:33,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_928fa009-a571-4c43-b190-e8e01f326df5/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bcaeaea390de0d2b32b8c11c56b4b66e7b2005e [2019-11-20 07:56:33,281 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 07:56:33,300 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 07:56:33,303 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 07:56:33,308 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 07:56:33,311 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 07:56:33,312 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_928fa009-a571-4c43-b190-e8e01f326df5/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Copenhagen.c [2019-11-20 07:56:33,370 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_928fa009-a571-4c43-b190-e8e01f326df5/bin/uautomizer/data/6030e75ed/9866b51ca8f9492686f010a95e74624f/FLAG19c8828df [2019-11-20 07:56:33,698 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 07:56:33,699 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_928fa009-a571-4c43-b190-e8e01f326df5/sv-benchmarks/c/termination-crafted/Copenhagen.c [2019-11-20 07:56:33,703 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_928fa009-a571-4c43-b190-e8e01f326df5/bin/uautomizer/data/6030e75ed/9866b51ca8f9492686f010a95e74624f/FLAG19c8828df [2019-11-20 07:56:34,084 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_928fa009-a571-4c43-b190-e8e01f326df5/bin/uautomizer/data/6030e75ed/9866b51ca8f9492686f010a95e74624f [2019-11-20 07:56:34,086 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 07:56:34,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 07:56:34,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 07:56:34,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 07:56:34,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 07:56:34,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:56:34" (1/1) ... [2019-11-20 07:56:34,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aa37bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:34, skipping insertion in model container [2019-11-20 07:56:34,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:56:34" (1/1) ... [2019-11-20 07:56:34,105 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 07:56:34,123 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 07:56:34,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 07:56:34,323 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 07:56:34,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 07:56:34,427 INFO L192 MainTranslator]: Completed translation [2019-11-20 07:56:34,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:34 WrapperNode [2019-11-20 07:56:34,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 07:56:34,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 07:56:34,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 07:56:34,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 07:56:34,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:34" (1/1) ... [2019-11-20 07:56:34,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:34" (1/1) ... [2019-11-20 07:56:34,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 07:56:34,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 07:56:34,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 07:56:34,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 07:56:34,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:34" (1/1) ... [2019-11-20 07:56:34,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:34" (1/1) ... [2019-11-20 07:56:34,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:34" (1/1) ... [2019-11-20 07:56:34,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:34" (1/1) ... [2019-11-20 07:56:34,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:34" (1/1) ... [2019-11-20 07:56:34,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:34" (1/1) ... [2019-11-20 07:56:34,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:34" (1/1) ... [2019-11-20 07:56:34,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 07:56:34,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 07:56:34,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 07:56:34,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 07:56:34,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_928fa009-a571-4c43-b190-e8e01f326df5/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 07:56:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 07:56:34,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 07:56:34,753 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 07:56:34,753 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 07:56:34,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:56:34 BoogieIcfgContainer [2019-11-20 07:56:34,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 07:56:34,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 07:56:34,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 07:56:34,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 07:56:34,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:56:34" (1/3) ... [2019-11-20 07:56:34,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2d4f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:56:34, skipping insertion in model container [2019-11-20 07:56:34,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:34" (2/3) ... [2019-11-20 07:56:34,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2d4f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:56:34, skipping insertion in model container [2019-11-20 07:56:34,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:56:34" (3/3) ... [2019-11-20 07:56:34,764 INFO L109 eAbstractionObserver]: Analyzing ICFG Copenhagen.c [2019-11-20 07:56:34,774 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 07:56:34,780 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-20 07:56:34,791 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-20 07:56:34,818 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 07:56:34,818 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 07:56:34,818 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 07:56:34,818 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 07:56:34,818 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 07:56:34,818 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 07:56:34,819 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 07:56:34,819 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 07:56:34,836 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-20 07:56:34,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-20 07:56:34,842 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:56:34,843 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-20 07:56:34,843 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 07:56:34,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:56:34,849 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-11-20 07:56:34,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:56:34,858 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443166437] [2019-11-20 07:56:34,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:56:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:56:35,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:56:35,007 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443166437] [2019-11-20 07:56:35,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:56:35,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-20 07:56:35,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016608762] [2019-11-20 07:56:35,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 07:56:35,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 07:56:35,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 07:56:35,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 07:56:35,061 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-11-20 07:56:35,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:56:35,125 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2019-11-20 07:56:35,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 07:56:35,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-20 07:56:35,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:56:35,135 INFO L225 Difference]: With dead ends: 30 [2019-11-20 07:56:35,136 INFO L226 Difference]: Without dead ends: 17 [2019-11-20 07:56:35,138 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 07:56:35,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-20 07:56:35,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2019-11-20 07:56:35,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 07:56:35,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-20 07:56:35,174 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2019-11-20 07:56:35,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:56:35,174 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-20 07:56:35,174 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 07:56:35,175 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-20 07:56:35,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 07:56:35,175 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:56:35,175 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 07:56:35,175 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 07:56:35,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:56:35,176 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-11-20 07:56:35,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:56:35,176 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004081286] [2019-11-20 07:56:35,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:56:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:56:35,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:56:35,197 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004081286] [2019-11-20 07:56:35,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:56:35,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 07:56:35,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862261859] [2019-11-20 07:56:35,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 07:56:35,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 07:56:35,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 07:56:35,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 07:56:35,200 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2019-11-20 07:56:35,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:56:35,217 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-20 07:56:35,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 07:56:35,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-20 07:56:35,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:56:35,219 INFO L225 Difference]: With dead ends: 12 [2019-11-20 07:56:35,219 INFO L226 Difference]: Without dead ends: 11 [2019-11-20 07:56:35,220 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 07:56:35,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-20 07:56:35,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-20 07:56:35,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-20 07:56:35,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-20 07:56:35,223 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2019-11-20 07:56:35,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:56:35,223 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-20 07:56:35,223 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 07:56:35,224 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-20 07:56:35,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 07:56:35,224 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:56:35,224 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 07:56:35,225 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 07:56:35,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:56:35,225 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2019-11-20 07:56:35,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:56:35,226 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770421473] [2019-11-20 07:56:35,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:56:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:56:35,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:56:35,265 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770421473] [2019-11-20 07:56:35,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:56:35,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 07:56:35,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315588090] [2019-11-20 07:56:35,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 07:56:35,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 07:56:35,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 07:56:35,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 07:56:35,267 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2019-11-20 07:56:35,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:56:35,318 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2019-11-20 07:56:35,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 07:56:35,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-20 07:56:35,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:56:35,319 INFO L225 Difference]: With dead ends: 16 [2019-11-20 07:56:35,319 INFO L226 Difference]: Without dead ends: 15 [2019-11-20 07:56:35,320 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 07:56:35,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-20 07:56:35,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2019-11-20 07:56:35,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-20 07:56:35,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-20 07:56:35,324 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2019-11-20 07:56:35,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:56:35,324 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-20 07:56:35,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 07:56:35,324 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-20 07:56:35,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-20 07:56:35,325 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:56:35,325 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-20 07:56:35,325 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 07:56:35,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:56:35,325 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2019-11-20 07:56:35,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:56:35,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25020352] [2019-11-20 07:56:35,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:56:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:56:35,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:56:35,358 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25020352] [2019-11-20 07:56:35,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:56:35,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 07:56:35,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138668100] [2019-11-20 07:56:35,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 07:56:35,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 07:56:35,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 07:56:35,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 07:56:35,360 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2019-11-20 07:56:35,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:56:35,372 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-20 07:56:35,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 07:56:35,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-20 07:56:35,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:56:35,373 INFO L225 Difference]: With dead ends: 13 [2019-11-20 07:56:35,373 INFO L226 Difference]: Without dead ends: 12 [2019-11-20 07:56:35,374 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 07:56:35,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-20 07:56:35,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-20 07:56:35,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 07:56:35,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-20 07:56:35,377 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2019-11-20 07:56:35,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:56:35,378 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-20 07:56:35,378 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 07:56:35,378 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-20 07:56:35,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 07:56:35,378 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:56:35,378 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-20 07:56:35,379 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 07:56:35,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:56:35,379 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2019-11-20 07:56:35,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:56:35,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707403540] [2019-11-20 07:56:35,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:56:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:56:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:56:35,414 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707403540] [2019-11-20 07:56:35,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:56:35,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 07:56:35,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327715026] [2019-11-20 07:56:35,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 07:56:35,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 07:56:35,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 07:56:35,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 07:56:35,415 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2019-11-20 07:56:35,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:56:35,452 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-20 07:56:35,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 07:56:35,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-20 07:56:35,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:56:35,453 INFO L225 Difference]: With dead ends: 12 [2019-11-20 07:56:35,454 INFO L226 Difference]: Without dead ends: 11 [2019-11-20 07:56:35,454 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 07:56:35,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-20 07:56:35,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-20 07:56:35,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-20 07:56:35,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-20 07:56:35,457 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2019-11-20 07:56:35,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:56:35,457 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-20 07:56:35,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 07:56:35,457 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-20 07:56:35,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 07:56:35,458 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:56:35,458 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2019-11-20 07:56:35,458 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 07:56:35,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:56:35,459 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2019-11-20 07:56:35,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:56:35,459 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312370549] [2019-11-20 07:56:35,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:56:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:56:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:56:35,526 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312370549] [2019-11-20 07:56:35,526 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174759059] [2019-11-20 07:56:35,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_928fa009-a571-4c43-b190-e8e01f326df5/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 07:56:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:56:35,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 07:56:35,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:56:35,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:56:35,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 07:56:35,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2019-11-20 07:56:35,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746851134] [2019-11-20 07:56:35,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 07:56:35,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 07:56:35,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 07:56:35,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-20 07:56:35,622 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 8 states. [2019-11-20 07:56:35,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:56:35,733 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-20 07:56:35,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 07:56:35,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-11-20 07:56:35,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:56:35,734 INFO L225 Difference]: With dead ends: 13 [2019-11-20 07:56:35,734 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 07:56:35,735 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2019-11-20 07:56:35,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 07:56:35,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 07:56:35,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 07:56:35,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 07:56:35,736 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-11-20 07:56:35,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:56:35,736 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 07:56:35,736 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 07:56:35,736 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 07:56:35,737 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 07:56:35,937 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 07:56:35,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 07:56:36,007 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-20 07:56:36,007 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 07:56:36,008 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-11-20 07:56:36,008 INFO L447 ceAbstractionStarter]: At program point L21(lines 11 22) the Hoare annotation is: true [2019-11-20 07:56:36,008 INFO L444 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-11-20 07:56:36,008 INFO L444 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-11-20 07:56:36,008 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-20 07:56:36,008 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-11-20 07:56:36,008 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 07:56:36,009 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 07:56:36,009 INFO L444 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-11-20 07:56:36,009 INFO L444 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2019-11-20 07:56:36,009 INFO L440 ceAbstractionStarter]: At program point L16-2(lines 16 20) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= ULTIMATE.start_main_~y~0 2147483647)) [2019-11-20 07:56:36,009 INFO L444 ceAbstractionStarter]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2019-11-20 07:56:36,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:56:36 BoogieIcfgContainer [2019-11-20 07:56:36,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 07:56:36,033 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 07:56:36,033 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 07:56:36,034 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 07:56:36,035 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:56:34" (3/4) ... [2019-11-20 07:56:36,039 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 07:56:36,051 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 07:56:36,051 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 07:56:36,119 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_928fa009-a571-4c43-b190-e8e01f326df5/bin/uautomizer/witness.graphml [2019-11-20 07:56:36,120 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 07:56:36,132 INFO L168 Benchmark]: Toolchain (without parser) took 2034.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -109.4 MB). Peak memory consumption was 56.2 MB. Max. memory is 11.5 GB. [2019-11-20 07:56:36,133 INFO L168 Benchmark]: CDTParser took 1.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 07:56:36,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -215.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-20 07:56:36,134 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-20 07:56:36,135 INFO L168 Benchmark]: Boogie Preprocessor took 17.86 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 07:56:36,136 INFO L168 Benchmark]: RCFGBuilder took 278.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2019-11-20 07:56:36,137 INFO L168 Benchmark]: TraceAbstraction took 1276.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 76.2 MB). Peak memory consumption was 76.2 MB. Max. memory is 11.5 GB. [2019-11-20 07:56:36,139 INFO L168 Benchmark]: Witness Printer took 87.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-20 07:56:36,142 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 339.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -215.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.86 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 278.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1276.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 76.2 MB). Peak memory consumption was 76.2 MB. Max. memory is 11.5 GB. * Witness Printer took 87.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: x <= 2147483647 && y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Result: SAFE, OverallTime: 1.1s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 35 SDslu, 12 SDs, 0 SdLazy, 66 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 8 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 687 SizeOfPredicates, 2 NumberOfNonLiveVariables, 31 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 4/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...